CN201234129Y - Surge protector - Google Patents
Surge protector Download PDFInfo
- Publication number
- CN201234129Y CN201234129Y CNU2008200397798U CN200820039779U CN201234129Y CN 201234129 Y CN201234129 Y CN 201234129Y CN U2008200397798 U CNU2008200397798 U CN U2008200397798U CN 200820039779 U CN200820039779 U CN 200820039779U CN 201234129 Y CN201234129 Y CN 201234129Y
- Authority
- CN
- China
- Prior art keywords
- shell
- surge protector
- electrode
- activity template
- piezo
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
- H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
- H01H37/761—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
- H01C7/126—Means for protecting against excessive pressure or for disconnecting in case of failure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/10—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess voltage, e.g. for lightning protection
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuses (AREA)
Abstract
The utility model discloses a surge protector, which comprises a pedestal, and a module inserted on the pedestal, wherein the module includes a housing, a varistor and a thermal detachment mechanism in the housing, and a first insert and a second insert on two sides of the housing; the thermal detachment mechanism comprises an electrode serially connected with one end of the varistor, and a moving sheet; the electrode is connected with the varistor by low-temperature soldering and is fixed at the middle position of the moving sheet; one end of the moving sheet is movably connected with the housing, and the other end is elastically connected with the housing; the first insert is serially connected with one end of the varistor; and the second insert is flexibly connected with the electrode. The surge protector has the advantages of simple fabrication process and low cost, and tests show that the structure can remarkably reduce the limit voltage to ensure timely action in the use process. On the other hand, the creepage distance between the inserts and the moving sheet is increased to improve the security.
Description
Technical field
The utility model relates to a kind of overvoltage emergency protective device of circuit, and particularly a kind of have an anti-lightning strike surge protector.
Background technology
Surge protector is a kind of low-voltage variation device commonly used; under normal circumstances; it is in high impedance status; in case and circuit is because of thunderbolt or other reason when surge occurring; its meeting conducting in the extremely short time; lightning current or overvoltage are introduced the earth by earth connection, come equipment on the protection circuit with this.When surge protector causes deterioration because of a variety of causes, this moment, surge protector can swash acute heating, thereby made the trip gear action in the surge protector, and surge protector and circuit are broken away from, and prevented surge protector " short circuit ", and line accident is magnified.
In order to realize above-mentioned functions; the surge protector that occurs various structure on the existing market already; but its nothing more than by pedestal and inserting the module on pedestal form; module includes modular cartridge again; be installed in the activity template in the modular cartridge; be positioned on the activity template two pins as electrode; piezo-resistance and hot release unit; this hot release unit is formed by shell fragment with the overheat protector that shell fragment one end and piezo-resistance weld together; the pad (trip point just) of this shell fragment one end and piezo-resistance has the upper surface that is positioned at piezo-resistance; the end face that is positioned at piezo-resistance is also arranged; as China Patent No. is the surge protector that 200420033812.8 " surge protector of new structure " just disclosed back a kind of structure, and its spring leaf also connects copper sheet by one; fuse link (being overheat protector) back links to each other with piezo-resistance.Though such structure also can achieve the above object, but from its structural analysis as can be known: (1) is owing to adopt split-type structural between shell fragment, piezo-resistance and the pin separately, connection each other realizes by soldering, complex manufacturing technology so on the one hand, the cost height, cause line impedance big on the other hand, the defective that deboost is high.(2) dispersal point is positioned at the end face of piezo-resistance, certainly will prolong the length that is connected of shell fragment and copper sheet like this, raises the cost, and strengthens line impedance, has promoted deboost virtually.(3) because the structure behind the pressure responsive resistor failure is unpredictable; in actual use; the ruined phenomenon of its surface insulation appears in regular meeting; and in the existing surge protector; because after breaking away between shell fragment and the piezo-resistance; do not have any safeguard procedures, therefore exist shell fragment and with electrode that piezo-resistance links to each other between be short-circuited or the potential safety hazard of arcing occurs.(4) after the disengaging, because the close together of piezo-resistance and copper sheet (or shell fragment), fuse link or low temperature scolding tin make said two devices phenomenon separated but still in each other's thoughts occur easily, and can't guarantee that surge protector breaks away from power supply veritably.
The utility model content
In order to overcome above defective, the technical problems to be solved in the utility model is: it is low to propose a kind of cost of manufacture, and line impedance is little and can improve the surge protector of its electric property.
The technical scheme that the utility model adopted is: a kind of surge protector, comprise pedestal, and be plugged with module on the pedestal; Module comprises shell, and the piezo-resistance and the hot releasing mechanism that are positioned at enclosure, is positioned at first inserted sheet and second inserted sheet of shell both sides; Hot releasing mechanism, comprise the electrode and the activity template of connecting with piezo-resistance one end, this electrode is connected with piezo-resistance by low temperature scolding tin, and this electrode is fixed in the centre position of activity template, activity template one end and shell flexibly connect, and the other end of activity template is connected with shell elasticity; First inserted sheet is connected with the piezo-resistance other end; Second inserted sheet is flexible coupling with above-mentioned electrode.
According to another one embodiment of the present utility model, surge protector comprises that further described activity template is connected by extension spring with described shell.
According to another one embodiment of the present utility model, surge protector comprises that further described shell is the flame retardant plastics shell.
According to another one embodiment of the present utility model, surge protector comprises that further described second inserted sheet is connected by metallic conductor with described electrode.
According to another one embodiment of the present utility model, surge protector further is included in the above activity template of shell and is connected side with shell elasticity and has form, has alert flag on the other end of activity template.
The beneficial effects of the utility model are: the utility model manufacture craft is simple, and cost is low, passes through test shows simultaneously, and such structure has also obviously reduced deboost, can guarantee its action in time in use.On the one hand, strengthen the creepage distance between inserted sheet and the activity template in addition, improved fail safe.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structural representation of preferred embodiment of the present utility model;
Fig. 2 is the vertical view of Fig. 1;
Among the figure: 1. pedestal, 3. module, 5. shell, 7. piezo-resistance, 9. first inserted sheet, 11. second inserted sheets, 13. electrodes, 15. activity templates, 17. forms, 19. metallic conductors.
Embodiment
With preferred embodiment the utility model is described in further detail in conjunction with the accompanying drawings now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
A kind of surge protector shown in Fig. 1-2; comprise pedestal 1; be plugged with module 3 on the pedestal 1; comprise shell 5 in the module 3; and the piezo-resistance 7 and the hot releasing mechanism that are positioned at shell 5 inside; be positioned at first inserted sheet 9 and second inserted sheet 11 of shell 5 both sides; wherein; hot releasing mechanism comprises the electrode 13 and the activity template 15 of connecting with piezo-resistance 7 one ends; this electrode 13 is connected with piezo-resistance 7 by low temperature scolding tin; this electrode 13 is fixed in the centre position of activity template 15; activity template 15 1 ends and shell 5 flexibly connect; the other end of activity template 15 is connected with shell 5 elasticity, and the preferred activity template 15 of the utility model and described shell 5 are connected by extension spring, in time provide pulling force to activity template 15.In addition, first inserted sheet 9 is connected with piezo-resistance 7 other ends; Second inserted sheet 11 is flexible coupling with above-mentioned electrode 13.Shell 5 is the flame retardant plastics shell, and second inserted sheet 11 is connected by metallic conductor 19 with electrode 13, electric current in time can be transmitted.Have form 17 on shell 5, this form 17 is positioned at activity template 15 and is connected side with shell 5 elasticity, has alert flag on the other end of activity template 15, guarantees in time to notify the user after surge protector damages.
Under the normal condition, the utility model is under the high-impedance state, almost there is not electric current to flow through (microampere order), supply voltage is applied to first inserted sheet 9 of the present utility model and second inserted sheet, 11 ends, piezo-resistance 7 is being born supply voltage. when thunder and lightning or the arrival of other switching overvoltages, piezo-resistance 7 heat transferred are to electrode 13 1 ends of soldered in the utility model, electrode 13 and piezo-resistance 7 are disconnected, activity template 15 is subjected to the active force of extension spring, make piezo-resistance 7 break away from power supply, thereby reach the purpose that prevents to cause fire because of short circuit.Simultaneously, after activity template 15 actions, red colour code reveals by form 17, provides the alarm signal of product deterioration.
With above-mentioned foundation desirable embodiment of the present utility model is enlightenment, and by above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this utility model technological thought.The technical scope of this utility model is not limited to the content on the specification, must determine its technical scope according to the claim scope.
Claims (5)
1, a kind of surge protector is characterized in that, comprising:
Pedestal (1) is plugged with module (3) on the pedestal (1);
Module (3) comprises shell (5), and is positioned at shell (5) inner piezo-resistance (7) and hot releasing mechanism, is positioned at first inserted sheet (9) and second inserted sheet (11) of shell (5) both sides;
Hot releasing mechanism, comprise the electrode (13) and the activity template (15) of connecting with piezo-resistance (7) one ends, this electrode (13) is connected with piezo-resistance (7) by low temperature scolding tin, this electrode (7) is fixed in the centre position of activity template (15), activity template (15) one ends and shell (5) flexibly connect, and the other end of activity template (15) is connected with shell (5) elasticity;
First inserted sheet (9) is directly connected with piezo-resistance (7) other end;
Second inserted sheet (11) is flexible coupling with above-mentioned electrode (13).
2, surge protector as claimed in claim 1 is characterized in that: described activity template (15) is connected by extension spring with described shell (5).
3, surge protector as claimed in claim 1 is characterized in that: described shell (5) is the flame retardant plastics shell.
4, surge protector as claimed in claim 1 is characterized in that: described second inserted sheet (11) is connected by metallic conductor (19) with described electrode (13).
5, surge protector as claimed in claim 1 is characterized in that: be connected side at the above activity template (15) of shell (5) with shell (5) elasticity and have form (17), have alert flag on the other end of activity template (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200397798U CN201234129Y (en) | 2008-06-27 | 2008-06-27 | Surge protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200397798U CN201234129Y (en) | 2008-06-27 | 2008-06-27 | Surge protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201234129Y true CN201234129Y (en) | 2009-05-06 |
Family
ID=40620518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200397798U Expired - Fee Related CN201234129Y (en) | 2008-06-27 | 2008-06-27 | Surge protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201234129Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011011985A1 (en) * | 2009-07-27 | 2011-02-03 | 佛山市浦斯电子有限公司 | Surge protector with thermal protection device |
| CN103050958A (en) * | 2012-12-26 | 2013-04-17 | 上海万谱电器有限公司 | Piezoresistor type surge protection device |
-
2008
- 2008-06-27 CN CNU2008200397798U patent/CN201234129Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011011985A1 (en) * | 2009-07-27 | 2011-02-03 | 佛山市浦斯电子有限公司 | Surge protector with thermal protection device |
| CN103050958A (en) * | 2012-12-26 | 2013-04-17 | 上海万谱电器有限公司 | Piezoresistor type surge protection device |
| CN103050958B (en) * | 2012-12-26 | 2016-04-27 | 上海万谱电器有限公司 | Piezoresistor type surge protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090506 Termination date: 20110627 |